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Top Forums Shell Programming and Scripting Bash counter increment not working Post 302903882 by Aia on Friday 30th of May 2014 09:52:55 AM
Old 05-30-2014
The while loop, in this case runs in another subshell with its own scope of variables, which are created and destroy as the while loop starts and finishes.

Some more explanation
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MouseX::NativeTraits::Counter(3pm)			User Contributed Perl Documentation			MouseX::NativeTraits::Counter(3pm)

NAME
MouseX::NativeTraits::Counter - Helper trait for counter attributes SYNOPSIS
package MyHomePage; use Mouse; has 'counter' => ( traits => ['Counter'], is => 'ro', isa => 'Num', default => 0, handles => { inc_counter => 'inc', dec_counter => 'dec', reset_counter => 'reset', }, ); my $page = MyHomePage->new(); $page->inc_counter; # same as $page->counter( $page->counter + 1 ); $page->dec_counter; # same as $page->counter( $page->counter - 1 ); DESCRIPTION
This module provides a simple counter attribute, which can be incremented and decremented. If your attribute definition does not include any of is, isa, default or handles but does use the "Counter" trait, then this module applies defaults as in the "SYNOPSIS" above. This allows for a very basic counter definition: has 'foo' => (traits => ['Counter']); $obj->inc_foo; PROVIDED METHODS
These methods are implemented in MouseX::NativeTraits::MethodProvider::Counter. It is important to note that all those methods do in place modification of the value stored in the attribute. set($value) Set the counter to the specified value. inc Increments the value stored in this slot by 1. Providing an argument will cause the counter to be increased by specified amount. dec Decrements the value stored in this slot by 1. Providing an argument will cause the counter to be increased by specified amount. reset Resets the value stored in this slot to it's default value. METHODS
meta method_provider_class helper_type SEE ALSO
MouseX::NativeTraits perl v5.14.2 2011-12-04 MouseX::NativeTraits::Counter(3pm)
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